[Q] Enabling USB debugging in 2.2 through recovery adb shell

Hello,
i have Milestone 2 with broken screen and i am trying to enable usb debugging through clockworkmod recovery mode.
I allready tried to:
- set adb_enable 1 in /data/data/com.android.providers.settings/databases/settings.db
- add persist.service.adb.enable=1 into /system/build.prop
- echo 1 > /data/property/persist.service.adb.enable

Can anyone suggest me another option?